/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraSystemInstance.h
Set a new tick behavior, this will not move the instance straight away and will wait until the next time it is evaluated
void SetTickBehavior ( [ENiagaraTickBehavior](API\Plugins\Niagara\ENiagaraTickBehavior) NewTickBehavior )